JPH09175472A - Detachable motor-driving device for bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change the existing bicycle into a motor-driven bicycle simply, by loading an electric motor, an accessory unit, and the like onto the rear part of an extensible frame body provided on a body bracket near the rear wheel shaft of a bicycle body. SOLUTION: A body bracket B is installed in a triangulation point near the rear wheel shaft of an existing bicycle, and a frame body C extending to the rear side is installed in the body bracket B. While a cylinder switch is installed in the upper part of the frame body C through a wire penetrating slide pipe, a holder D is fixed to the rear part of the frame body C allowable to extend and contract by a screw 20 inserted into a slit. While a battery case is installed in an adequate position of the body bracket B, a motor 9 is loaded into a holder D, and a torque roll 13 rotated by the motor 9 is abutted allowable to connect and disconnect to/from the peripheral surface of the tire of the rear wheel, so as to give the motive power of the motor 9 to the rear wheel as an assist power.

Description

Detailed Description of the Invention

(Prior Art) The present invention relates to an electric bicycle in which an electric motor can be attached to a general commercial bicycle.

(Prior Art) Electric bicycles which are generally commercially available today have made considerable progress, but cannot be easily diverted to other bicycles.

(Problems to be solved by the invention) For this reason, neither bicycle can be electrified.

In view of such conventional circumstances, the present invention fixes a load-bearing main bracket to a part of the rear vehicle body so that it can be easily attached to a bicycle in use, and an electric motor and an electric motor are provided above and below the main bracket. The expansion / contraction (chassis) is solid for installing auxiliary parts, etc., it can be disassembled again when stored, and it becomes a convenient electric bicycle that can be easily attached to and detached from a commercially available bicycle.

(Means for Solving the Problems) It is possible to electrify a bicycle by easily attaching this device to the bicycle which is using the assembled frame.

(Embodiment) Convenience brings changes in transportation means, and expansion of the range of action can reduce the number of bicycles left abandoned in front of stations, etc. Further, convenience can contribute to pollution elimination by changing usage of transportation means. .

(Description of reference numerals) FIG. 1 is a side view in which this device is attached to a general bicycle, (A) shows a vehicle body, and (B) a main bracket is a bicycle rear axle part around 3
It is supported at a corner point, and a bracket such as a cylinder switch like 27 and K in FIG. 2 is attached to the upper part of the frame (C) by a wire-through slide pipe (D).
Indicates that a holder whose length can be adjusted is fixed by a long hole of reference numeral 20 and then fixed by screws of reference numerals 21 and 22 (F) shows a lower frame and a fixing screw for coupling with the upper frame holder. Indicates. (E) shows the lower frame, and the long hole of reference numeral 18 indicates that the length is adjusted and is fixed by the reference numeral after adjustment (1) shows the electric wire to the rear motor (2-1) Indicates that the clip on the ground side can be removed and stored when not in use with the clip of (2-2). (N-1) wire is connected to (N-2). (X) is for wire pulling. Shows the lever.
(3) indicates a battery, (4) indicates that the terminal communicates with (5) the cylinder switch, (6-1) indicates an electric wire, and (6-2) communicates, and arrows indicate respective movements and flows (7). ) Indicates a set screw of the wire slide pipe, and (8) indicates a lever directly connected to the electric motor and indicates that the lever is moved in the direction of the arrow by pulling the wire. (9) indicates a motor, (10) indicates a shock-absorbing component (11) that is connected to upper and lower frames by bolts, and (12) indicates a fixing bolt of a width adjusting metal machine (13) indicates torque. (14) indicates a tension spring (15 indicates the vehicle body and reference numeral B indicates a screw with a washer (1
(17) indicates that the code E is fixed by a screw with washer (18) indicates a long groove and that it moves in the direction of the arrow (19) indicates that the connecting screw is attached. Reference numeral (20) indicates a long groove for movement, and it is fixed by the screws (21 and 22) after adjustment (29-
1) shows a shaft that supports a motor and a casing attached to the motor. FIG. 2 is an enlarged plan view of the entire frame, and shows that the battery case (23) is fixed by rivets or screws of (P) (K) shows a bracket of the cylinder switch (H) shows a mounting hole. Reference numeral (27) shows a bracket of a wire slide pipe.
8) indicates that it is fixed by reference numeral 7 (29-2).
Indicates a set hole for the motor and casing (30-
1) The spring set hole (F-1) indicates arc welding. Figure 3 is an enlarged plan view of the body set on both sides of the bicycle, showing that part (B) is connected to the vehicle body. It shows that they match, and the battery case of (23) is to be fixed with a rivet of (P). Fig. 4 is a plan view of the stopper of the main bracket. The part that comes into contact with the car body is a semi-curved circle (16-2). Indicates. FIG. 5 is a side view of FIG. FIG. 6 is a side view of the main bracket (L) shows that it corresponds to 16-2 in FIG. 4 or FIG. 5 (R) shows a burr hole in the rear wheel axle. Figure-
7 is a side view of FIG. 6 and shows that it is fixed to 24-1 and 25-1 of FIG. 8 by connecting bolts or screw screws. Figure-
8 is a partial cutaway side view of the symbols C and 20 in FIG. Figure 9 is an exploded plan view of the lower (F) frame, and (10-1) is 3
(19-1) indicates that it is connected to the (10-2) of FIG. 11 with a bolt or a screw screw. It shows that the inside square pipe is tightened with the fixing screw of (12) after adjusting the entrance and exit as shown by the arrow. Figure 10 is a right side view of the frame, and (F-1) shows that they are connected by arc welding. FIG. 11 is a plan view of the frame (E), and the long hole of (18) is for adjustment.
(19-2), which indicates to be fixed by 7, indicates to connect to the reference numeral 19-1 in FIG. FIG. 12 is a side view of FIG.

(Advantages of the Invention) The present invention can be easily removed from a conventional bicycle, and the current circuit from the battery terminal can be easily attached and detached with a clip, so that it can be charged at home or at a commute to work. It is convenient for commuting to school and commuting and contributes to the improvement of social life.

[Brief description of the drawings]

FIG. 1 is a side view showing a usable state.

FIG. 2 is an enlarged side view of the assembly of the device and the frame.

FIG. 3 is a plan view of both sides of the device.

[Fig. 4] Main metal bracket is a metal fitting to the vehicle body

[Fig. 5] Side view of the metal bracket for the main bracket

FIG. 6 is a plan view of the main bracket.

[Fig. 7] Side view of main bracket

[Fig. 8] Fig. 3 Part C, cutaway, detailed view

FIG. 9 is a configuration diagram of F in FIG.

[Figure 10] Side view of Figure 9

FIG. 11 is a plan view of E in FIG.

FIG. 12 is a side view of FIG. 11.

Claims (1)

[Claims] 1. A device for mounting a motor and auxiliary equipment around the rear wheel shaft of a bicycle and a rear part of a frame which can be expanded and contracted to a main bracket, and which is detachable to electrify the bicycle.